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SummaryThis study was carried out to determine the resistance to insecticides of European Grapevine Moth, the main pest of vineyards between 2011-2014. Using the diet method, Lethal Concentration (LC) values of four different insecticides were determined in 10 different European Grapevine Moth populations and then the resistance coefficients were calculated comparing these values with susceptible population. LC50 values were about 6 fold for chlorpyrifos-ethyl in Sarıgöl-2 population, about 5 fold for deltamethrin in Salihli population, about 6 fold for indoxacarb in Ahmetli population, about 6.5 fold for spinosad in Sarıbey population. These results suggest that these populations have developed resistance against the used insecticides. Enzyme activities of AChE, EST and GST were determined in 10 populations. No significant difference was detected in GST enzyme activities of the populations. In Sarıgöl-2 population, AChE enzyme activity was 5 fold while EST enzyme activity was 1.5 fold higher than the susceptible population.

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In this study, the effects of two different commercial neem insecticides (NeemAzal T/S and Neem Oil) were determined on different stages of Nezara viridula (L.) (Heteroptera: Pentatomidae) under laboratory conditions. Neem Azal and Neem Oil were applied at concentrations of 0.5 % and 2 %, respectively. Mortality was recorded after 3, 7 and 14 days for nymphs and adults; 7 and 14 days for old (4-day-old) eggs; and 14 days for newly laid (one-dayold) eggs.Both products have no significant effect on adults and newly laid eggs. However Neem Oil was found to be more effective than NeemAzal T/S on nymphs and on old laid eggs after 7 and 14 days.It can be concluded that both neem products have potential for insecticidal efficacy (approximately 60 %) against nymphs of N. viridula. at concentrations recommended by manufacturers for registered pests.

A determination of the effects of classical and nano-formulations of Azadirachta indica A. Juss (Meliaceae) and Melaleuca alternifolia (Maiden & Betche) Cheel (Myrtaceae) extracts on Tetranychus urticae Koch (Acari: Tetranychidae) and Amblyseius swirskii Athias-Henriot (Acari: Phytoseiidae